HuagongsheHuagongshe Chemistry Print Report · For research reference only
Phthalic Anhydride → 4',5'-Dimethylfluorescein
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Phthalic Anhydride | HCID 6811 | — |
| Reactant | 2-Methylresorcinol | HCID 11843 | — |
| Reactant | Potassium bisulfate | HCID 516920 | — |
| Solvent | Ethyl Dodecanoate | HCID 7800 | — |
| Product | 4',5'-Dimethylfluorescein | HCID 3082937 | — |
Reaction Steps
A mixture comprising 62 g of 2-methylresorcinol, 30 g of phthalic anhydride, 2 g of potassium hydrogen sulfate and 500 ml of ethyl laurate is brought to 200° C. for 3 hours. After cooling, the crude product is filtered and washed with acetone and then dried. The product obtained is a dark orange powder.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07518002B2 |
| Source dataset | uspto-grants-2009_04 |
| ORD ID | ord-acc161b2f96a4651b129451c794410ae |
| Source note | uspto-grants-2009_04 |